Is aluminum better for the planet? Does carbon fiber's performance live up to its high price? Will my frame end up as ocean fill? Is carbon fiber poisonous to work with?

Recently there has been a lot of finger-pointing within the sport, with aluminum’s supporters claiming that the abundant metal’s well established recycling channels make its products more earth friendly than carbon fiber. Some hold that somewhere in Asia, children are slaving away, waist deep in toxic chemicals to produce high-modulus pre-preg so dentists in more developed nations can shave two seconds from their Strava times. Entertaining stuff, for sure. Accurate? Not so much.

more: https://www.pinkbike.com/news/aluminum-vs-carbon-separating-environmental-fact-from-fiction-in-the-frame-materials-debate.html